Calvin Klein is known for its provocative ads, from a bulging Justin Bieber to sexts, but one of its latest ads takes it to a whole new level.

The company posted an ad that says "I flash in #mycalvins," with an upskirt shot to its Instagram page. An edited photo is pictured right. We've chosen not to post the whole image after cut

The ad is drawing a fierce reaction online, from critics who see it as pervy and sexist.  
"This is really disappointing. Sick," one person wrote.